Can anyone identify this for me?

[apipkin]

I was looking at my tank earlier, and I started noticing some movement in the sand. The closer I looked, the more I saw these little guys walking around.

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They look like they walk around with their tails tucked underneath as they move around and they like to be curled up it seems.

I just wanted to know if they are bad in the reef or if I should work to remove them.

Thanks!

 

[rjrgroup]

Amphipods and Copepods, VERY GOOD!

 

[stacy22]

All I see are red "x"s

 

[declanisadog]

rjrgroup;938550 wrote: Amphipods and Copepods, VERY GOOD!

+1. Good stuff

 

[jetlink82]

Good thing you guys chimed in, I was about to say THUMB!

 

[apipkin]

Oh awesome! That is great news! Those things are crawling all over. I've never seen them that big.

 

[apipkin]

stacy22;938551 wrote: All I see are red "x"s

I had the wrong url at first

 

[apipkin]

I also found this video

 

[jennm]

The big ones that are sort of flea-looking (maybe a bit larger than a flea) are Amphipods. Copepods tend to be a bit smaller.

Both are Arthropods and are beneficial for your tank, and many species of fish will eat them if they encounter them.

Jenn